Scrambling in quantum cellular automata

B Kent, S Racz, S Shashi - Physical Review B, 2023 - APS
Scrambling is the delocalization of quantum information over a many-body system and
underlies all quantum-chaotic dynamics. We employ discrete quantum cellular automata as …

Unraveling PXP Many-Body Scars through Floquet Dynamics

G Giudici, FM Surace, H Pichler - Physical Review Letters, 2024 - APS
Quantum scars are special eigenstates of many-body systems that evade thermalization.
They were first discovered in the PXP model, a well-known effective description of Rydberg …

Dirac quantum walk on tetrahedra

U Nzongani, N Eon, I Márquez-Martín, A Pérez… - Physical Review A, 2024 - APS
Discrete-time quantum walks (QWs) are transportation models of single quantum particles
over a lattice. Their evolution is driven through causal and local unitary operators. QWs are a …

Twisted quantum walks, generalised Dirac equation and Fermion doubling

N Jolly, G Di Molfetta - The European Physical Journal D, 2023 - Springer
Quantum discrete-time walkers have since their introduction demonstrated applications in
algorithmics and to model and simulate a wide range of transport phenomena. They have …

Entanglement dynamics and phase transitions of the Floquet cluster spin chain

AD Verga - Physical Review B, 2023 - APS
Cluster states were introduced in the context of measurement-based quantum computing. In
one dimension, the cluster Hamiltonian possesses topologically protected states. We …

Concomitant Entanglement and Control Criticality Driven by Collective Measurements

T Iadecola, JH Wilson, JH Pixley - arXiv preprint arXiv:2409.06780, 2024 - arxiv.org
Adaptive quantum circuits--where a quantum many-body state is controlled using
measurements and conditional unitary operations--are a powerful paradigm for state …

Dissipative quantum many-body dynamics in (1+ 1) D quantum cellular automata and quantum neural networks

M Boneberg, F Carollo, I Lesanovsky - New Journal of Physics, 2023 - iopscience.iop.org
Classical artificial neural networks, built from elementary units, possess enormous
expressive power. Here we investigate a quantum neural network (QNN) architecture, which …

Entanglement transition in a cluster spin chain coupled with free spins

K Sellapillay, L Raymond, AD Verga - arXiv preprint arXiv:2501.05937, 2025 - arxiv.org
We investigate the entanglement of a ladder of spins formed by two sublattices,
a''cluster''chain and the''environment'', consisting of independent spins, both coupled by an …